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This document details how to add buttons to pages on your website. For more information on how to add links in general, please visit our documentention documentation on Adding links to content.
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While the link is still highlighted, click Style on the editor, and then select which button color you would like.
Once you select it, it should look like this
Step 4. Click Save
Once you're done click Save at the bottom of the page and you should have a button!